cross hair


cross hair
noun
either of two fine mutually perpendicular lines that cross in the focus plane of an optical instrument and are use for sighting or calibration
-

he had the target in his cross hairs

Syn: ↑cross wire
Hypernyms: ↑line
Part Holonyms: ↑reticle, ↑reticule, ↑graticule

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noun
: one of the fine wires or spider lines mounted as a reticle in the focus of the eyepiece of optical instruments and used as a reference line in the field or for marking the instrumental axis

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cross hair,
one of the fine strands of spider web, quartz fiber, or other material stretched across the focal plane of an optical instrument for defining accurately the line of sight; cross wire: »

His face glued to the radarscope and its tireless, swinging line of light [he] made manual adjustments to keep the cross hairs on the pip that marked his target (Time).


Useful english dictionary. 2012.

Look at other dictionaries:

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  • cross wire — noun either of two fine mutually perpendicular lines that cross in the focus plane of an optical instrument and are use for sighting or calibration he had the target in his cross hairs • Syn: ↑cross hair • Hypernyms: ↑line • Part Holonyms:… …   Useful english dictionary

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